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WO2014188147A1 - Endoscope comprenant un écran entre une caméra et une source lumineuse - Google Patents

Endoscope comprenant un écran entre une caméra et une source lumineuse Download PDF

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Publication number
WO2014188147A1
WO2014188147A1 PCT/GB2014/000172 GB2014000172W WO2014188147A1 WO 2014188147 A1 WO2014188147 A1 WO 2014188147A1 GB 2014000172 W GB2014000172 W GB 2014000172W WO 2014188147 A1 WO2014188147 A1 WO 2014188147A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
window
optical barrier
imaging device
radiation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/GB2014/000172
Other languages
English (en)
Inventor
Andrew Thomas Jeffrey
Vincent Patrick MCCORRY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smiths Medical International Ltd
Original Assignee
Smiths Medical International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smiths Medical International Ltd filed Critical Smiths Medical International Ltd
Publication of WO2014188147A1 publication Critical patent/WO2014188147A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00096—Optical elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0661—Endoscope light sources
    • A61B1/0676—Endoscope light sources at distal tip of an endoscope
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B11/00—Filters or other obturators specially adapted for photographic purposes
    • G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
    • G03B11/045—Lens hoods or shields
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0646—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements with illumination filters
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units
    • G03B2215/0564—Combinations of cameras with electronic flash units characterised by the type of light source
    • G03B2215/0567—Solid-state light source, e.g. LED, laser

Definitions

  • This invention relates to imaging apparatus of the kind including a housing, an imaging device within the housing, an optically-transparent window mounted with the housing through which the imaging device receives radiation from a field of view externally of the apparatus, an illuminating device also within the housing and arranged to provide illuminating radiation through the window onto the field of view.
  • the imaging apparatus requires some means for illuminating the field of view of the camera, such as one or more LED lamps.
  • imaging apparatus of the above-specified kind characterised in that the apparatus further includes an optical barrier between the imaging device and the illuminating device, that the optical barrier is in the form of an optically opaque compressible material located in the housing in compression and in contact with an inner surface of the window such as thereby to reduce the amount of radiation emitted by the illuminating device that is incident on the imaging device without passing through the window.
  • the optical barrier is preferably of a radiation-absorbing material.
  • the optical barrier is preferably of a material selected from a group comprising: rubber, foam or silicone and is preferably of a black colour. The optical barrier may be held in compression between the floor of a recess in the housing and the inner surface of the window.
  • the optical barrier may extend across the housing between the imaging device and the illuminating device such that it divides the housing into two optically-isolated regions in which one contains the imaging device and the other contains the illuminating device.
  • the optical barrier may be in the form of a ring compressed between the window and a surface around the imaging device such that radiation from the field of view passes to the imaging device through the centre of the ring.
  • the illuminating device may include one or more LEDs.
  • the housing may include an inner part having an open end and a cap fitted over the outside of the inner part, the cap including a wall extending around the outside of the inner part and sealed with it, and an end face of the cap providing the window of the apparatus.
  • the cap may be formed entirely of an optically-transparent material.
  • an endoscope including a bendable elongate support and imaging apparatus according to the above one aspect of the present invention mounted at one end of the support.
  • Figure 1 is a side elevation view of the endoscope
  • Figure 2 is a cross-sectional side elevation view of the forward, patient end of the endoscope showing a first arrangement of the imaging apparatus;
  • Figure 3 is a forward end view of the endoscope of Figure 2;
  • Figure 4 is a cross-sectional side elevation view of an endoscope with an alternative arrangement of imaging apparatus;
  • Figure 5 is a forward end view of the endoscope of Figure 4.
  • the endoscope, introducer or bougie 1 includes an elongate, bendable support or rod 10 comprising an outer plastics sleeve 11 and an inner core 12 having a coaxial passage 13 extending along its length.
  • the forward, patient end of the rod 10 supports an imaging unit 14 that is connected by a cable 15 extending rearwardly along the passage 13 to a low profile electrical connector 16 at the rear end of the endoscope.
  • the connector 16 is connected to a display unit 17 via a cable 18 and mating connector 19.
  • the endoscope 1 is used to insert an endotracheal tube 20 or the like. The endoscope 1 is first inserted to the patient's trachea while monitoring the image on the display 17.
  • the imaging unit 14 is contained within the forward or patient end 30 of the endoscope 1.
  • the forward end of the inner core 12 terminates short of the forward end of the sleeve 11 to leave a cylindrical recess 31 within which the imaging unit 14 is contained.
  • the forward end of the sleeve 11 provides an inner part that is closed by a moulded cap 32 having an inverted can shape with a cylindrical side wall 33 and a lateral end wall 34.
  • the side wall 33 fits onto a reduced diameter recess 35 at the forward end of the sleeve 11 with its rear end abutting a forwardly-facing step 36.
  • the cap 32 is sealed on the outside of the sleeve 11, such as by means of an adhesive or solvent.
  • the thickness of the side wall 33 is equal to the height of the step 36 so that there is a smooth continuation between the outer surface of the cap 32 and the sleeve 11.
  • the cap 32 is preferably moulded entirely of an optically-transparent plastics material although it is only essential that its end wall 34 be transparent so as to provide a window for the imaging unit 14.
  • the imaging unit 14 comprises an imaging device in the form of a conventional video camera sensor 40 and an illuminating means or device such as in the form of one or more LEDs 41 mounted side-by-side. Typically, the LED 41 emits radiation in the visible spectrum although this is not essential since it could emit at wavelengths beyond the visible part of the spectrum providing that the camera were sensitive to these wavelengths.
  • the camera 40 is oriented to receive radiation from a field of view through the end wall or window 34 of the cap 32 forwardly of the endoscope 1.
  • the imaging unit 14 additionally includes a barrier, partition or screen 42 arranged to prevent or reduce the amount of radiation emitted by the LED 41 that is incident on the camera sensor 40 directly or by internal reflection within the recess 31, that is, radiation that passes from the LED to the camera without having first passed through the window 34.
  • the barrier 42 is of an optically-opaque, radiation-absorbing, compressible material, such as a matt black rubber, foam or silicone. The surfaces of the barrier 42 could have small ribs or other surface textures to reduce reflection and are preferably of a black colour.
  • the barrier 42 is held in compression between the inner, underside of the window 34 and the floor of the recess 31 provided by the forward end of the inner core 12. As illustrated, the barrier 42 extends diametrically across the recess 31 in a straight line but the barrier could divide the recess into two optically-isolated regions in other ways, such as along a chord displaced towards the camera or LED, or it could follow a curved or angled path.
  • the barrier 42 is compressible it makes close contact with the underside of the window 34 and with the end surface of the inner core 12, thereby accommodating any imperfections in the surfaces and any misalignment of the surfaces.
  • the compressible nature of the barrier 42 facilitates assembly and does not require close tolerances in order to achieve intimate contact. In this way, the leakage of radiation around the barrier 42 can be very low.
  • Figures 4 and 5 show an alternative configuration where the barrier 52 is in the shape of a circular ring and is located between the underside of the window 54 and the forward-facing surface of the camera 50.
  • the barrier could sit on the floor of the recess and extend around and along the camera.
  • the open centre or bore 53 of the ring 52 provides a light path along which the camera 50 can receive radiation transmitted through the window 54 from its field of view.
  • a ring- shape barrier could instead, or additionally, be provided between the LED 51 and the window 54.
  • These ring-shape barriers need not be circular but could be of other shapes, such as oval or square, to match the shape of the camera or illumination source with which they are used.
  • the present invention is not confined to endoscopes but could be used advantageously in any imaging apparatus having an illumination source mounted close to a sensor.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Endoscopes (AREA)

Abstract

L'invention concerne un endoscope (1) comportant un appareil d'imagerie à une extrémité d'une tige de support (10) comprenant une caméra (40) et des DEL (41) montées dans un évidement sous une coiffe transparente (32). Une barrière optique (42) conçue dans un matériau compressible optiquement opaque, tel qu'une mousse, un caoutchouc ou une silicone qui s'étend dans l'évidement entre la caméra (40) et les DEL (41) pour diviser l'évidement en deux régions d'isolation optique et empêcher les pertes de lumière directement des DEL à la caméra. La barrière optique (42) est maintenue en compression entre le fond de l'évidement et le dessous d'une fenêtre transparente (34) formée par la coiffe (32).
PCT/GB2014/000172 2013-05-22 2014-05-06 Endoscope comprenant un écran entre une caméra et une source lumineuse Ceased WO2014188147A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1309198.8 2013-05-22
GBGB1309198.8A GB201309198D0 (en) 2013-05-22 2013-05-22 Imaging apparatus

Publications (1)

Publication Number Publication Date
WO2014188147A1 true WO2014188147A1 (fr) 2014-11-27

Family

ID=48747144

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2014/000172 Ceased WO2014188147A1 (fr) 2013-05-22 2014-05-06 Endoscope comprenant un écran entre une caméra et une source lumineuse

Country Status (2)

Country Link
GB (1) GB201309198D0 (fr)
WO (1) WO2014188147A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107361734A (zh) * 2017-07-26 2017-11-21 浙江百安医疗科技有限公司 具有补光装置的视频阴道窥镜
US9851478B2 (en) 2016-02-10 2017-12-26 Microsoft Technology Licensing, Llc Optical cross talk mitigation for optical device having disrupting features formed on a shield
WO2018165229A1 (fr) * 2017-03-07 2018-09-13 Qioptiq Photonics Gmbh & Co. Kg Endoscope doté d'un couvercle à l'extrémité distale d'une canule
US10911656B2 (en) 2017-11-21 2021-02-02 Microsoft Technology Licensing, Llc Optical isolation systems for displays

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1830565A2 (fr) * 2006-03-03 2007-09-05 Fujitsu Limited Appareil de capture d'images
US20070249907A1 (en) * 2006-04-20 2007-10-25 Boulais Dennis R Imaging assembly with transparent distal cap
US20080091064A1 (en) * 2006-10-17 2008-04-17 Vadim Laser Portable endoscope for intubation
CN101530314A (zh) * 2009-04-08 2009-09-16 东莞光阵显示器制品有限公司 一种用于可视内窥装置光信号采集的方法及其可视内窥装置
KR20100111789A (ko) * 2009-04-08 2010-10-18 에치디프로 주식회사 적외선 엘이디를 갖는 돔형 감시카메라
WO2010136748A1 (fr) 2009-05-28 2010-12-02 Smiths Medical International Limited Appareil médico-chirurgical
US20120092549A1 (en) * 2009-10-30 2012-04-19 Vivotek Inc. Photographic device
WO2013031276A1 (fr) * 2011-08-30 2013-03-07 オリンパスメディカルシステムズ株式会社 Unité de capture d'images d'endoscope
WO2013124605A1 (fr) 2012-02-25 2013-08-29 Smiths Medical International Limited Ensembles médico-chirurgicaux

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1830565A2 (fr) * 2006-03-03 2007-09-05 Fujitsu Limited Appareil de capture d'images
US20070249907A1 (en) * 2006-04-20 2007-10-25 Boulais Dennis R Imaging assembly with transparent distal cap
US20080091064A1 (en) * 2006-10-17 2008-04-17 Vadim Laser Portable endoscope for intubation
CN101530314A (zh) * 2009-04-08 2009-09-16 东莞光阵显示器制品有限公司 一种用于可视内窥装置光信号采集的方法及其可视内窥装置
KR20100111789A (ko) * 2009-04-08 2010-10-18 에치디프로 주식회사 적외선 엘이디를 갖는 돔형 감시카메라
WO2010136748A1 (fr) 2009-05-28 2010-12-02 Smiths Medical International Limited Appareil médico-chirurgical
US20120092549A1 (en) * 2009-10-30 2012-04-19 Vivotek Inc. Photographic device
WO2013031276A1 (fr) * 2011-08-30 2013-03-07 オリンパスメディカルシステムズ株式会社 Unité de capture d'images d'endoscope
WO2013124605A1 (fr) 2012-02-25 2013-08-29 Smiths Medical International Limited Ensembles médico-chirurgicaux

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9851478B2 (en) 2016-02-10 2017-12-26 Microsoft Technology Licensing, Llc Optical cross talk mitigation for optical device having disrupting features formed on a shield
WO2018165229A1 (fr) * 2017-03-07 2018-09-13 Qioptiq Photonics Gmbh & Co. Kg Endoscope doté d'un couvercle à l'extrémité distale d'une canule
CN110612054A (zh) * 2017-03-07 2019-12-24 启艺光学两合公司 在插管的远端具有盖的内窥镜
JP2020509830A (ja) * 2017-03-07 2020-04-02 キオプティック フォトニクス ゲーエムベーハー ウント コー カーゲー カニューレの遠位端にカバーを有する内視鏡
JP7128198B2 (ja) 2017-03-07 2022-08-30 キオプティック フォトニクス ゲーエムベーハー ウント コー カーゲー カニューレの遠位端にカバーを有する内視鏡
US11478128B2 (en) 2017-03-07 2022-10-25 Qioptiq Photonics Gmbh & Co. Kg Endoscope with cover at distal end of cannula
CN107361734A (zh) * 2017-07-26 2017-11-21 浙江百安医疗科技有限公司 具有补光装置的视频阴道窥镜
US10911656B2 (en) 2017-11-21 2021-02-02 Microsoft Technology Licensing, Llc Optical isolation systems for displays

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Publication number Publication date
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